Named after a tiny single-cell organism that was declared extraordinarily trippy by the scientists who discovered it, Hallucigenia was a small, relatively short-lived art group based out of 604. Hallucigenia was an art scene experiment that encouraged its artists to produce work to the best of their ability and placed little or no restrictions on what they could release. It was started by an ex-Mistigris member, Etana in June of 1998 and released its last pack in February 1999.

Hallucigenia's packs featured ANSI art, ASCII art, hirez art and scanned in "real world" art (like sketches and paintings). Work was released through HAL's website and its home BBS, DoDEL.